In a deserted tenement in an occupied city, two dead bodies lie on a dusty floor as if they have fallen out of the air. One corpse is cut in half, the other is utterly unmarked. One is human, the other isn't. The city of Ambergris is half ruined, rotten, its population controlled by narcotics, internment camps, and acts of terror. But its new masters want this case closed, urgently. Detective John Finch has just one week to solve it or be sent to the camps.